Adrian Wojnarowski

The National Basketball Players Association is filing a grievance against the Sacramento Kings, challenging the legitimacy of the franchise’s voiding of free-agent forward Luc Mbah a Moute’s contract over an alleged failed medical physical, league sources told Yahoo Sports.

The NBPA is planning to file the grievance to the NBA early next week, league sources said.

Mbah a Moute has been meeting with NBPA executive director Michele Roberts in Johannesburg this week, where Mbah a Moute, a Cameroon native, has been medically cleared to play for Team Africa against Team World in the first NBA exhibition game in Africa.

Mbah a Moute signed a one-year, $1.5 million deal with Sacramento on July 14, and two days later had Kings officials inform him that concerns over his right shoulder had caused the franchise to void the deal, league sources told Yahoo Sports.

Mbah a Moute’s representatives at Wasserman Media Group and NBPA officials, armed with independent medical examinations that produced playing clearances, are disputing the legitimacy of the Kings’ process and the findings to declare a failed physical, league sources said.

The Cavaliers will have two separate trade exceptions – $10.5 million and $2.85 million – that they’ll have one calendar year to use. The Cavaliers can use a trade exception to acquire a player under contract in a deal.

The deal could spare the Cavaliers nearly $10 million in salary and luxury tax payments.

Haywood has a non-guaranteed $10.5 million contract that the Blazers will waive without cost to them. Miller, owed $2.85 million in the final year of his contract, is a strong candidate to negotiate a buyout with the Blazers and become a free agent, league sources told Yahoo Sports.

Cleveland's payroll is just over $100 million – without an agreement yet in place for restricted free agent Tristan Thompson, who's expected to get a deal north of the $13 million a year he rejected in the preseason.

Before the Thompson deal, Cleveland is facing a luxury tax bill near $40 million.

Napier, 24, was the 24th overall pick in the 2014 NBA draft by the Charlotte Hornets and was traded to Miami in a draft-day deal. He averaged 5.1 points, 2.5 assists and 2.2 rebounds in 51 games for the Heat last season.

The Heat traded Napier, who will make $1.3 million in 2015-16, to reduce their luxury tax bill.

He helped lead Connecticut to the national title in 2014 and was the Final Four Most Outstanding player.

Free-agent center Sam Dalembert has agreed on a one-year, $1.4 million veteran’s minimum deal with the Dallas Mavericks, a league source told Yahoo Sports.

Dalembert played for coach Rick Carlisle two years ago in Dallas, and will get an opportunity to play a significant role at center for the Mavericks.

Dalembert will join Zaza Pachulia, acquired in a deal with Milwaukee, as part of the Mavericks’ center rotation.

Dallas lost Tyson Chandler to Phoenix in free agency and was unable to persuade the Los Angeles Clippers’ DeAndre Jordan to honor his verbal commitment in free agency and sign with the Mavericks.

Dalembert, 34, is fighting to reclaim his professional standing in the NBA and a return to the Mavericks could have a strong mutual benefit if he takes advantage of the opportunity.

Dalembert returns to the Mavericks, where he played 80 games in the 2013-14 season before Dallas sent him to New York as part of the Tyson Chandler trade. He averaged 6.6 points and 6.8 rebounds for the Mavericks.

Dalembert played 32 games with the Knicks before his release in the 2014-15 season. He sat out the rest of the year.

Robinson, 21, became an unrestricted free agent after the Philadelphia 76ers declined to make him a qualifying offer.

Robinson played 35 games in his rookie season for the Minnesota Timberwolves and 76ers, averaging 2.1 points per game. Minnesota placed Robinson on waivers in March, and he was claimed by Philadelphia.

Robinson left the University of Michigan after his sophomore season and was taken with the 40th overall pick by Minnesota in the 2014 NBA draft.

Free-agent guard Seth Curry has agreed to a two-year, $2 million contract with the Sacramento Kings, league sources told Yahoo Sports.

Curry will have a player option on the 2016-17 season, sources said. This gives Curry two fully guaranteed seasons with the Kings.

Curry, 24, was the top scorer in the NBA’s summer league at 25 points per game for New Orleans, a performance that inspired stronger interest among NBA teams.

Curry, the young brother of Golden State Warriors guard Stephen Curry, the NBA’s Most Valuable Player, has shuttled between the NBA Development League and 10-day contracts in Cleveland, Memphis and Phoenix over the past two seasons.

Curry’s ability to shoot made him an increasingly attractive bench scoring option for several teams, including New Orleans and Charlotte, league sources said.

Denver Nuggets forward Danilo Gallinari is finalizing an agreement on a two-year extension worth an additional $34 million on his contract, league sources told Yahoo Sports.

The deal is a restructuring that includes a $2.5 million increase on the $11.5 million owed to Gallinari as he enters the final year of his contract in 2015-16, sources said.

Under the newly negotiated terms, Gallinari will make $14 million this season, the first of a deal that runs through the 2017-18 season, sources said. He will make $15.5 million in 2016-17 and has a player option worth $16.1 million for the third year of the deal and a full trade kicker, sources said.

Gallinari is eligible for the extension because he’s signing a four-year-plus deal after three years from the date of his previous extension. The Nuggets have the requisite salary-cap space to redo Gallinari’s deal too, a benefit of trading guard Ty Lawson to Houston on Sunday night.

Under the same provision in the NBA’s collective bargaining agreement, Denver extended Wilson Chandler on a four-year, $46 million deal last week.

Denver has reached extensions with three core forwards in the past year: Gallinari, Chandler and Kenneth Faried.

For Denver, the ability to secure a first-round pick in an otherwise barren market for Lawson was something of a coup for general manager TIm Connelly. The Rockets get a borderline All-Star talent with Lawson who could be a difference-maker in getting them over the top in the Western Conference. Obviously, Houston is running the risk that it can help Lawson get his personal life on track again.

Lawson, 27, entered treatment for alcohol abuse last week after he was arrested on DUI charges in Los Angeles.

The Rockets re-signed Patrick Beverley to a four-year, $25 million deal this summer. After now adding Lawson, they could have one of the best point guard combinations in the NBA.

Oklahoma City general manager Sam Presti informed Portland of his decision to retain Kanter on Sunday night, league sources said.

Kanter's’ deal includes a player option on the fourth year and a 15 percent trade kicker bonus.

Kanter traveled to Portland on Thursday to sign the offer sheet and it was sent via email on Thursday afternoon to Oklahoma City, beginning a 72-hour window to match the offer.

For Oklahoma City, the decision to match the offer sheet was an easy one. The Thunder offered a four-year, $62 million deal before Kanter signed the $70 million offer sheet with Portland, league sources told Yahoo Sports.

The Thunder are over the luxury tax threshold this season, but that’ll change once the cap rises in 2016-17 with the influx of television money. Even if Kevin Durant signs a potential $200 million max contract extension in the summer of 2016, the Thunder still expect to be under the tax.

Portland will send a future second-round pick to the Magic for Harkless.

Harkless was the 15th overall pick in the 2012 NBA draft, but never fully met his potential in Orlando. Only 22 years old, Harkless is still a young player with upside and a sensible acquisition with little risk for the Blazers as general manager Neil Olshey reshapes the roster post-LaMarcus Aldridge and Wesley Matthews.

Portland has a need at small forward and Harkless will get an opportunity with the Blazers.

The Blazers are awaiting Oklahoma City's decision on matching a $70 million offer sheet for restricted free-agent center Enes Kanter. That deadline is midnight ET on Sunday.

Portland brings Harkless into a team that has added such young players as Mason Plumlee and Noah Vonleh in trades this summer. The Blazeers signed Ed Davis, and Al-Farouq Aminu to go with All-Star point guard Damian Lillard, Meyers Leonard and C.J. McCollum.

Harkless averaged 3.5 points last season and 6.8 points in his three NBA seasons in Orlando.